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From ddek...@apache.org
Subject [02/51] [partial] incubator-freemarker-site git commit: 2.3.26-voting docs, removed nightly
Date Wed, 15 Mar 2017 21:18:59 GMT
http://git-wip-us.apache.org/repos/asf/incubator-freemarker-site/blob/a4004324/builds/2.3.26-nightly/xgui_imperative_formal.html
----------------------------------------------------------------------
diff --git a/builds/2.3.26-nightly/xgui_imperative_formal.html b/builds/2.3.26-nightly/xgui_imperative_formal.html
deleted file mode 100644
index 324910a..0000000
--- a/builds/2.3.26-nightly/xgui_imperative_formal.html
+++ /dev/null
@@ -1,545 +0,0 @@
-<!doctype html>
-<!-- Generated by FreeMarker/Docgen from DocBook -->
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-  <!--[if lte IE 9]>
-  <div style="background-color: #C00; color: #fff; padding: 12px 24px;">Please use a modern browser to view this website.</div>
-  <![endif]--><div class="header-top-bg"><div class="site-width header-top"><a class="logo" href="http://freemarker.org" role="banner">            <img itemprop="image" src="logo.png" alt="FreeMarker">
-</a><ul class="tabs"><li><a href="http://freemarker.org/">Home</a></li><li class="current"><a href="index.html">Manual</a></li><li><a class="external" href="api/index.html">Java API</a></li></ul><ul class="secondary-tabs"><li><a class="tab icon-heart" href="http://freemarker.org/contribute.html" title="Contribute"><span>Contribute</span></a></li><li><a class="tab icon-bug" href="https://issues.apache.org/jira/browse/FREEMARKER/" title="Report a Bug"><span>Report a Bug</span></a></li><li><a class="tab icon-download" href="http://freemarker.org/freemarkerdownload.html" title="Download"><span>Download</span></a></li></ul></div></div><div class="header-bottom-bg"><div class="site-width search-row"><a href="index.html" class="navigation-header">Manual</a><div class="navigation-header"></div><form method="get" class="search-form" action="search-results.html"><fieldset><legend class="sr-only">Search form</legend><label for="search-field" class="sr-only">Search query</label><input id="searc
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 -3" itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem"><a class="label" itemprop="item" href="xgui_imperative_formal.html"><span itemprop="name">Details</span></a></li></ul><div class="bookmarks" title="Bookmarks"><span class="sr-only">Bookmarks:</span><ul class="bookmark-list"><li><a href="alphaidx.html">Alpha. index</a></li><li><a href="gloss.html">Glossary</a></li><li><a href="dgui_template_exp.html#exp_cheatsheet">Expressions</a></li><li><a href="ref_builtins_alphaidx.html">?builtins</a></li><li><a href="ref_directive_alphaidx.html">#directives</a></li><li><a href="ref_specvar.html">.spec_vars</a></li><li><a href="app_faq.html">FAQ</a></li></ul></div></div></div>    <div class="main-content site-width">
-      <div class="content-wrapper">
-  <div id="table-of-contents-wrapper" class="col-left">
-      <script>var breadcrumb = ["Apache FreeMarker Manual","XML Processing Guide","Imperative XML processing","Details"];</script>
-      <script src="toc.js?1489402528979"></script>
-      <script src="docgen-resources/main.min.js?1489402528979"></script>
-  </div>
-<div class="col-right"><div class="page-content"><div class="page-title"><div class="pagers top"><a class="paging-arrow previous" href="xgui_imperative_learn.html"><span>Previous</span></a><a class="paging-arrow next" href="xgui_declarative.html"><span>Next</span></a></div><div class="title-wrapper">
-<h1 class="content-header header-section1" id="xgui_imperative_formal" itemprop="headline">Details</h1>
-</div></div><p>Every variable that corresponds to a single node in the DOM tree
-        is a multi-type variable of type node and type hash (for programmers:
-        implements both <code class="inline-code">TemplateNodeModel</code> and
-        <code class="inline-code">TemplateHashModel</code>). Thus, you can use the <a href="ref_builtins_node.html">node built-ins</a> with them. Hash keys
-        are interpreted as XPath expressions, except the special keys shown in
-        the table below. Some of the node variables also have string type, so
-        you can use them as string variables (for programmers: they implement
-        <code class="inline-code">TemplateScalarModel</code>).</p><a name="misc.xguiTable"></a>  <div class="table-responsive">
-    <table class="table">
-
-          <thead>
-            <tr>
-              <th>Node type (<code class="inline-code">?node_type</code>)</th>
-
-
-              <th>Node name (<code class="inline-code">?node_name</code>)</th>
-
-
-              <th>String value (e.g. <code class="inline-code">&lt;p&gt;${node}</code>)</th>
-
-
-              <th>Special hash keys</th>
-
-            </tr>
-
-          </thead>
-
-
-          <tbody>
-            <tr>
-              <td><code class="inline-code">&quot;document&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;@document&quot;</code></td>
-
-
-              <td>No string value. (Error when you try to use it as
-              string.)</td>
-
-
-              <td><code class="inline-code"><em class="code-color">elementName</em></code>,
-              <code class="inline-code">&quot;<em class="code-color">prefix</em>:<em class="code-color">elementName</em>&quot;</code>,
-              <code class="inline-code">*</code>, <code class="inline-code">**</code>,
-              <code class="inline-code">@@markup</code>, <code class="inline-code">@@nested_markup</code>,
-              <code class="inline-code">@@text</code>, <code class="inline-code">@@local_name</code>,
-              <code class="inline-code">@@qname</code>, <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;element&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;<em class="code-color">name</em>&quot;</code>: the
-              name of the element. This is the local name (i.e. name without
-              namespace prefix).</td>
-
-
-              <td>If it has no element children, the text of all text node
-              children concatenated together. Error otherwise, when you try to
-              use it as string.</td>
-
-
-              <td><code class="inline-code"><em class="code-color">elementName</em></code>,
-              <code class="inline-code">&quot;<em class="code-color">prefix</em>:<em class="code-color">elementName</em>&quot;</code>,
-              <code class="inline-code">*</code>, <code class="inline-code">**</code>,
-              <code class="inline-code">@<em class="code-color">attrName</em></code>,
-              <code class="inline-code">&quot;@<em class="code-color">prefix</em>:<em class="code-color">attrName</em>&quot;</code>,
-              <code class="inline-code">@@</code>, <code class="inline-code">&quot;@*&quot;</code>,
-              <code class="inline-code">@@start_tag</code>, <code class="inline-code">@@end_tag</code>,
-              <code class="inline-code">@@attributes_markup</code>,
-              <code class="inline-code">@@next_sibling_element</code>,
-              <code class="inline-code">@@previous_sibling_element</code>,
-              <code class="inline-code">@@markup</code>, <code class="inline-code">@@nested_markup</code>,
-              <code class="inline-code">@@text</code>, <code class="inline-code">@@local_name</code>,
-              <code class="inline-code">@@qname</code>, <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;text&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;@text&quot;</code></td>
-
-
-              <td>The text itself.</td>
-
-
-              <td><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code>, <code class="inline-code">@@text</code>,
-              <code class="inline-code">@@local_name</code>, <code class="inline-code">@@qname</code>,
-              <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;pi&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;@pi$<em class="code-color">target</em>&quot;</code></td>
-
-
-              <td>The part between the target name and the
-              <code class="inline-code">?&gt;</code>.</td>
-
-
-              <td><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code>, <code class="inline-code">@@text</code>,
-              <code class="inline-code">@@local_name</code>, <code class="inline-code">@@qname</code>,
-              <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;comment&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;@comment&quot;</code></td>
-
-
-              <td>The text of the comment, without the delimiters
-              <code class="inline-code">&lt;!--</code> and <code class="inline-code">--&gt;</code>.</td>
-
-
-              <td><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code>, <code class="inline-code">@@text</code>,
-              <code class="inline-code">@@local_name</code>, <code class="inline-code">@@qname</code>,
-              <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;attribute&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;<em class="code-color">name</em>&quot;</code>: the
-              name of the attribute. This is the local name (i.e. name without
-              namespace prefix).</td>
-
-
-              <td>The value of the attribute.</td>
-
-
-              <td><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code>, <code class="inline-code">@@text</code>,
-              <code class="inline-code">@@qname</code>, <code class="inline-code">@@local_name</code>,
-              <code class="inline-code">@@qname</code>, <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-
-            <tr>
-              <td><code class="inline-code">&quot;document_type&quot;</code></td>
-
-
-              <td><code class="inline-code">&quot;@document_type$<em class="code-color">name</em>&quot;</code>:
-              <code class="inline-code"><em class="code-color">name</em></code> is the name
-              of the document element.</td>
-
-
-              <td>No string value. (Error when you try to use it as
-              string.)</td>
-
-
-              <td><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code>, <code class="inline-code">@@text</code>,
-              <code class="inline-code">@@local_name</code>, <code class="inline-code">@@qname</code>,
-              <code class="inline-code">@@namespace</code></td>
-
-            </tr>
-
-          </tbody>
-
-            </table>
-  </div>
-<p>Notes:</p><ul>
-          <li>
-            <p>There is no CDATA type. CDATA nodes are transparently
-            considered as text nodes.</p>
-          </li>
-
-          <li>
-            <p>These variables do <em>not</em> support
-            <code class="inline-code">?keys</code> and <code class="inline-code">?values</code>.</p>
-          </li>
-
-          <li>
-            <p>Element and attribute node names are local names, that is,
-            they do not contain the namespace prefix. The URI of the namespace
-            the node belongs to can be queried with the
-            <code class="inline-code">?node_namespace</code> built-in.</p>
-          </li>
-
-          <li>
-            <p>XPath expression needs Jaxen (recommended, but please use
-            1.1-beta-8 or later; <a href="http://jaxen.org/">download
-            it here</a>) or Apache Xalan classes available, or an error
-            will stop template execution. Note, however, that as some special
-            hash keys hide the XPath expressions of the same meaning, those
-            XPath expressions will work even if there is no XPath
-            implementation available. <span class="marked-for-programmers">If both
-            Xalan and Jaxen is available, FreeMarker will use Xalan, unless
-            you choose Jaxen by calling
-            <code class="inline-code">freemarker.ext.dom.NodeModel.useJaxenXPathSupport()</code>
-            from Java.</span></p>
-          </li>
-
-          <li>
-            <p>If Jaxen is used for the XPath support (not Xalan), then
-            FreeMarker variables are visible with XPath variable references
-            (e.g.
-            <code class="inline-code">doc[&quot;book/chapter[title=$currentTitle]&quot;]</code>).</p>
-          </li>
-        </ul><p>Meaning of special hash keys:</p><ul>
-          <li>
-            <p><code class="inline-code"><em class="code-color">elementName</em></code>,
-            <code class="inline-code">&quot;<em class="code-color">prefix</em>:<em class="code-color">elementName</em>&quot;</code>:
-            Returns the sequence of child nodes that are elements of name
-            <code class="inline-code"><em class="code-color">elementName</em></code>. (Note
-            that the term "child" means
-            <em>immediate</em> descendant.) The selection is XML
-            name-space aware, unless the XML document was persed with an XML
-            parser that was not in namespace aware mode. In XML name-space
-            aware mode, names without prefix
-            (<em>elementName</em>) selects only elements
-            that doesn&#39;t belong to any XML name-space (unless you have
-            registered a default XML namespace), and names with prefix
-            (<em>prefix</em>:<em>elementName</em>)
-            selects only elements that are belonging to the XML namespace
-            denoted by the prefix. The registration of prefixes and the
-            setting of the default XML namespace is done with the
-            <code class="inline-code">ns_prefixes</code> parameter of the <a href="ref_directive_ftl.html#ref.directive.ftl"><code>ftl</code>
-            directive</a>.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">*</code>: Returns the sequence of all child
-            (direct descendant) <em>element</em> nodes. The
-            sequence will contain the elements in the "document
-            order", that is, in the order in which the first character
-            of the XML representation of each node occurs (after expansion of
-            general entities).</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">**</code>: Returns the sequence of all
-            descendant <em>element</em> nodes. The sequence will
-            contain the elements in the document order.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@<em class="code-color">attName</em></code>,
-            <code class="inline-code">&quot;@<em class="code-color">prefix</em>:<em class="code-color">attrName</em>&quot;</code>:
-            Returns the attribute
-            <code class="inline-code"><em class="code-color">attName</em></code> of the
-            element as a sequence of size 1 that contains the attribute node,
-            or as an empty sequence if the attribute does not exist (so to
-            check if an attribute exists use
-            <code class="inline-code">foo.@<em class="code-color">attName</em>[0]??</code>,
-            <em>not</em>
-            <code class="inline-code">foo.@<em class="code-color">attName</em>??</code>). As
-            with special key
-            <code class="inline-code">&quot;<em class="code-color">elementName</em>&quot;</code>, if
-            the length of the sequence is 1, then it also acts as its first
-            subvariable. If no
-            <code class="inline-code"><em class="code-color">prefix</em></code> is used, then
-            it returns only attribute that does not use XML namespace (even if
-            you have set a default XML namespace). If a
-            <code class="inline-code"><em class="code-color">prefix</em></code> is used, it
-            returns only the attribute that belongs to the XML namespace
-            associated with the
-            <code class="inline-code"><em class="code-color">prefix</em></code>. The
-            registration of prefixes is done with the
-            <code class="inline-code">ns_prefixes</code> parameter of the <a href="ref_directive_ftl.html#ref.directive.ftl"><code>ftl</code>
-            directive</a>.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@</code> or <code class="inline-code">&quot;@*&quot;</code>: Returns
-            the sequence of attribute nodes belonging to the parent element.
-            This is the same as XPath <code class="inline-code">@*</code>.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@qname</code>: Returns the full-qualified name
-            of the element (such as <code class="inline-code">e:book</code>, in contrast to
-            the local name returned by <code class="inline-code">?node_name</code> that is
-            <code class="inline-code">book</code>) . The prefix used (as
-            <code class="inline-code">e</code>) is chosen based on the prefix registered in
-            the current namespace with the <code class="inline-code">ns_prefixes</code>
-            parameter of the <code class="inline-code">ftl</code> directive, and not
-            influenced by the prefix used in the source XML document. If you
-            have set a default XML namespace, then for nodes that use that,
-            prefix <code class="inline-code">D</code> will be used. For nodes that does not
-            belong to an XML namespace, no prefix is used (even if you have
-            set a default namespace). If there is no prefix registered for the
-            namespace of the node, the result is a non-existent variable
-            (<code class="inline-code">node.@@qname??</code> is
-            <code class="inline-code">false</code>).</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@local_mame</code>: The name of the node
-            without the namespace prefix.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@namespace</code>: The namespace URL (not the
-            namespace prefix) of the node.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@markup</code>: This returns the full XML
-            markup of a node, as a string. (Full XML markup means that it also
-            contains the markup of the child nodes, and the markup of the
-            children of the child nodes, and so on.) The markup you get is not
-            necessary the same as the markup in the source XML file, it&#39;s just
-            semantically identical. Especially, note that CDATA sections will
-            become to plain text. Also note that depending on how did you
-            wrapped the original XML document with FreeMarker, comment or
-            processing instruction nodes may were removed, and then they will
-            be missing from the output of course. The first outputted start
-            tag will contain
-            <code class="inline-code">xmlns:<em class="code-color">prefix</em></code>
-            attributes for each XML name-spaces used in the outputted XML
-            fragment, and those prefixes will be used in the outputted element
-            and attribute names. These prefixes will be the same as the
-            prefixes registered with the <code class="inline-code">ns_prefixes</code>
-            parameter of the <code class="inline-code">ftl</code> directive (no prefix will
-            be used for <code class="inline-code">D</code>, as it will be registered as the
-            default name-space with an <code class="inline-code">xmlns</code> attribute), or
-            if no prefix was assigned for a XML name-space with that, then an
-            arbitrary chosen unused prefix is used.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@nested_markup</code>: This is similar to
-            <code class="inline-code">@@markup</code>, but it returns the XML markup of an
-            element without its opening and closing tags. For the document
-            node, it returns the same as <code class="inline-code">@@markup</code>. For
-            other node types (text, processing instruction, etc.), it returns
-            an empty string. Unlike with <code class="inline-code">@@markup</code>, no
-            <code class="inline-code">xmlns:<em class="code-color">prefix</em></code>
-            attributes will be placed into the output, but regarding the
-            prefixes used in element and attribute names the rules are the
-            same.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@text</code>: This returns the value of all
-            text nodes that occur within the node (all descendant text nodes,
-            not just direct children), concatenated together into a single
-            string. If the node has no text node children, then the result is
-            an empty string.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@start_tag</code>: Returns the markup of the
-            <a href="gloss.html#gloss.startTag">start-tag</a> of the element
-            node. As with <code class="inline-code">@@markup</code>, the output is not
-            necessary the same as in the original XML document, but it is
-            semantically equivalent with that. Regarding the XML name-spaces
-            (<code class="inline-code">xmlns:<em class="code-color">prefix</em></code>
-            attributes in the output, etc.) the rules are the same as with
-            <code class="inline-code">&quot;@@markup&quot;</code></p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@end_tag</code>: Returns the markup of the
-            <a href="gloss.html#gloss.endTag">end-tag</a> of the element node.
-            As with <code class="inline-code">@@markup</code>, the output is not necessary
-            the same as in the original XML document, but it is semantically
-            equivalent with that.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@attributes_markup</code>: Returns the markup
-            of the <a href="gloss.html#gloss.attribute">attributes</a> of the
-            element node. As with <code class="inline-code">@@markup</code>, the output is
-            not necessary the same as in the original XML document, but it is
-            semantically equivalent with that.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@next_sibling_element</code> (since 2.3.26):
-            The following sibling element of an element node or an empty node
-            sequence if there&#39;s no such element. An element counts as a
-            sibling of another element if they are on the same hierarchical
-            level, and there&#39;s no other element or non-whitespace character
-            data (text or CDATA) between the two elements. For example in
-            <code class="inline-code">&lt;a/&gt;&lt;!-- comment
-            --&gt;#&amp;x20;&lt;b/&gt;</code> the two elements are
-            siblings, but not in <code class="inline-code">&lt;a/&gt;text&lt;b/&gt;</code>
-            or <code class="inline-code">&lt;a/&gt;&lt;x/&gt;&lt;b/&gt;</code>.</p>
-          </li>
-
-          <li>
-            <p><code class="inline-code">@@previous_sibling_element</code> (since
-            2.3.26): The previous sibling element of an element node or an
-            empty node sequence if there&#39;s no such element. See the last point
-            for the meaning of sibling.</p>
-          </li>
-        </ul>
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_151">Node sequences</h2>
-
-
-          <p>Many of the special hash keys (indicated in the above list),
-          and XPath expressions that result in node-sets (see the <a href="http://www.w3.org/TR/xpath">XPath recommendation</a>)
-          return a sequence of nodes.</p>
-
-          <p>These node sequences, if they store exactly 1 subvariable,
-          will also act as the subvariable itself. For example,
-          <code class="inline-code">${book.title[0]}</code> will do the same as
-          <code class="inline-code">${book.title}</code>, if there is only one
-          <code class="inline-code">title</code> element child of element
-          <code class="inline-code">book</code>.</p>
-
-          <p>Returning an empty node sequence is a normal situation. For
-          example, if in a concrete XML document, element
-          <code class="inline-code">book</code> has no child element
-          <code class="inline-code">chapter</code>, then <code class="inline-code">book.chapter</code>
-          results in an empty node sequence. Beware! This also means, that
-          <code class="inline-code">book.chaptre</code> (note the typo) will also return
-          empty node sequence, and will not stop with error. Also,
-          <code class="inline-code">book.chaptre??</code> (note the typo) will return
-          <code class="inline-code">true</code> because the empty sequence exists, so you
-          have to use <code class="inline-code">book.chaptre[0]??</code> for the
-          check.</p>
-
-          <p>Node sequences that store not 1 nodes (but 0 or more than 1
-          nodes) also support some of the hash keys described above. Namely,
-          the following special keys are supported:</p>
-
-          <ul>
-            <li>
-              <p><code class="inline-code"><em class="code-color">elementName</em></code>,
-              <code class="inline-code">&quot;<em class="code-color">prefix</em>:<em class="code-color">elementName</em>&quot;</code></p>
-            </li>
-
-            <li>
-              <p><code class="inline-code">@<em class="code-color">attrName</em></code>,
-              <code class="inline-code">&quot;@<em class="code-color">prefix</em>:<em class="code-color">attrName</em>&quot;</code></p>
-            </li>
-
-            <li>
-              <p><code class="inline-code">@@markup</code>,
-              <code class="inline-code">@@nested_markup</code></p>
-            </li>
-
-            <li>
-              <p><code class="inline-code">@@text</code></p>
-            </li>
-
-            <li>
-              <p><code class="inline-code">*</code>, <code class="inline-code">**</code></p>
-            </li>
-
-            <li>
-              <p><code class="inline-code">@@</code>, <code class="inline-code">&quot;@*&quot;</code></p>
-            </li>
-          </ul>
-
-          <p>When you apply one of the above special keys on a node
-          sequence that contains more than 1 or 0 nodes, then for each node in
-          the sequence (where the special key does make sense, e.g. text nodes
-          will be skipped for key <code class="inline-code">*</code> or
-          <code class="inline-code">@foo</code>), the special key will be applied as it was
-          explained for single nodes, and the results will be concatenated to
-          form the final result. The results will be concatenated in the order
-          as the corresponding nodes occur in the node sequence. The
-          concatenation means string or sequence concatenation depending on
-          the type of the results. If the special key would result in a string
-          for a single node, then for multiple nodes the result is a single
-          string too (the results for the single nodes concatenated), and if
-          the special key would return a sequence for a single node, then for
-          multiple nodes the result is a single sequence too. If there are 0
-          nodes in the sequence you apply the special key on, the string
-          result is an empty string or an empty sequence respectively.</p>
-
-          <p>XPath expressions can be used with node sequences. However,
-          for 0 or more than 1 nodes it will work only if you use Jaxen
-          instead of Xalan, because of the limitations of the Xalan XPath
-          implementation.</p>
-        <div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="xgui_imperative_learn.html"><span>Previous</span></a><a class="paging-arrow next" href="xgui_declarative.html"><span>Next</span></a></div></div></div></div>      </div>
-    </div>
-<div class="site-footer"><div class="site-width"><div class="footer-top"><div class="col-left sitemap"><div class="column"><h3 class="column-header">Overview</h3><ul><li><a href="http://freemarker.org/">What is FreeMarker?</a></li><li><a href="http://freemarker.org/freemarkerdownload.html">Download</a></li><li><a href="app_versions.html">Version history</a></li><li><a href="http://freemarker.org/history.html">About us</a></li><li><a itemprop="license" href="app_license.html">License</a></li></ul></div><div class="column"><h3 class="column-header">Handy stuff</h3><ul><li><a href="http://freemarker-online.kenshoo.com/">Try template online</a></li><li><a href="dgui_template_exp.html#exp_cheatsheet">Expressions cheatsheet</a></li><li><a href="ref_directive_alphaidx.html">#directives</a></li><li><a href="ref_builtins_alphaidx.html">?built_ins</a></li><li><a href="ref_specvar.html">.special_vars</a></li></ul></div><div class="column"><h3 class="column-header">Community</h3><ul><li><a href
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-Last generated:
-<time itemprop="dateModified" datetime="2017-03-13T10:55:28Z" title="Monday, March 13, 2017 10:55:28 AM GMT">2017-03-13 10:55:28 GMT</time>, for Freemarker 2.3.26 </p>
-<p class="copyright">
-© <span itemprop="copyrightYear">1999</span>–2017
-<a itemtype="http://schema.org/Organization" itemprop="copyrightHolder" href="http://apache.org/">The Apache Software Foundation</a>. Apache FreeMarker, FreeMarker, Apache Incubator, Apache, the Apache FreeMarker logo are trademarks of The Apache Software Foundation. </p>
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http://git-wip-us.apache.org/repos/asf/incubator-freemarker-site/blob/a4004324/builds/2.3.26-nightly/xgui_imperative_learn.html
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-      <script>var breadcrumb = ["Apache FreeMarker Manual","XML Processing Guide","Imperative XML processing","Basics"];</script>
-      <script src="toc.js?1489402528979"></script>
-      <script src="docgen-resources/main.min.js?1489402528979"></script>
-  </div>
-<div class="col-right"><div class="page-content"><div class="page-title"><div class="pagers top"><a class="paging-arrow previous" href="xgui_imperative.html"><span>Previous</span></a><a class="paging-arrow next" href="xgui_imperative_formal.html"><span>Next</span></a></div><div class="title-wrapper">
-<h1 class="content-header header-section1" id="xgui_imperative_learn" itemprop="headline">Basics</h1>
-</div></div><div class="page-menu">
-<div class="page-menu-title">Page Contents</div>
-<ul><li><a class="page-menu-link" href="#autoid_145" data-menu-target="autoid_145">Accessing elements by name</a></li><li><a class="page-menu-link" href="#autoid_146" data-menu-target="autoid_146">Accessing attributes</a></li><li><a class="page-menu-link" href="#autoid_147" data-menu-target="autoid_147">Exploring the tree</a></li><li><a class="page-menu-link" href="#autoid_148" data-menu-target="autoid_148">Using XPath expressions</a></li><li><a class="page-menu-link" href="#autoid_149" data-menu-target="autoid_149">XML namespaces</a></li><li><a class="page-menu-link" href="#autoid_150" data-menu-target="autoid_150">Don&#39;t forget escaping!</a></li></ul> </div>  <div class="callout note">
-    <strong class="callout-label">Note:</strong>
-
-          <p>This section uses the DOM tree and the variable made in the
-          <a href="xgui_expose.html">previous chapter</a>.</p>
-          </div>
-<p>Assume that the programmer has put the XML document into the
-        data-model as variable <code class="inline-code">doc</code>. This variable
-        corresponds to the root of the <a href="xgui_expose_dom.html">DOM
-        tree</a>, the "document". The actual variable
-        structure behind <code class="inline-code">doc</code> is wily enough, and only
-        roughly resembles the DOM tree. So instead of getting lost in the
-        details, let&#39;s see how to use it by example.</p>
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_145">Accessing elements by name</h2>
-
-
-          <p>This FTL prints the title of the book:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;h1&gt;${doc.book.title}&lt;/h1&gt;</pre></div>
-
-          <p>The output will be:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">&lt;h1&gt;Test Book&lt;/h1&gt;</pre></div>
-
-          <p>As you see, both <code class="inline-code">doc</code> and
-          <code class="inline-code">book</code> can be used as hashes; you get their child
-          nodes as sub variables. Basically, you describe the path by which
-          you reach the target (element <code class="inline-code">title</code>) in the DOM
-          tree. You may notice that there was some swindle above: with
-          <code class="inline-code">${doc.book.title}</code>, it seems that we instruct
-          FreeMarker to print the <code class="inline-code">title</code> element itself, but
-          we should print its child text node (check the <a href="xgui_expose_dom.html">DOM tree</a>). It still works, because
-          elements are not only hash variables, but string variables as well.
-          The scalar value of an element node is the string resulting from the
-          concatenation of all its text child nodes. However, trying to use an
-          element as scalar will cause error if the element has child
-          elements. For example <code class="inline-code">${doc.book}</code> would stop with
-          error.</p>
-
-          <p>This FTL prints the titles of the two chapters:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;h2&gt;${doc.book.chapter[0].title}&lt;/h2&gt;
-&lt;h2&gt;${doc.book.chapter[1].title}&lt;/h2&gt;</pre></div>
-
-          <p>Here, as <code class="inline-code">book</code> has 2
-          <code class="inline-code">chapter</code> element children,
-          <code class="inline-code">doc.book.chapter</code> is a sequence that stores the
-          two element nodes. Thus, we can generalize the above FTL, so it
-          works with any number of chapters:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book.chapter as ch&gt;
-  &lt;h2&gt;${ch.title}&lt;/h2&gt;
-&lt;/#list&gt;</pre></div>
-
-          <p>But what&#39;s if there is only one chapter? Actually, when you
-          access an element as hash subvariable, it is
-          <em>always</em> a sequence as well (not only hash and
-          string), but if the sequence contains exactly 1 item, then the
-          variable also acts as that item itself. So, returning to the first
-          example, this would print the book title as well:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;h1&gt;${doc.book[0].title[0]}&lt;/h1&gt;</pre></div>
-
-          <p>But you know that there is exactly 1 <code class="inline-code">book</code>
-          element, and that a book has exactly 1 title, so you can omit the
-          <code class="inline-code">[0]</code>-s.
-          <code class="inline-code">${doc.book.chapter.title}</code> would work too, if the
-          book happen to have only 1 <code class="inline-code">chapter</code>-s (otherwise
-          it is ambiguous: how is it to know if the <code class="inline-code">title</code>
-          of which <code class="inline-code">chapter</code> you want? So it stops with an
-          error.). But since a book can have multiple chapters, you don&#39;t use
-          this form. If the element <code class="inline-code">book</code> has no
-          <code class="inline-code">chapter</code> child, then
-          <code class="inline-code">doc.book.chapter</code> will be a 0 length sequence, so
-          the FTL with <code class="inline-code">&lt;#list ...&gt;</code> will still
-          work.</p>
-
-          <p>It is important to realize the consequence that, for example,
-          if <code class="inline-code">book</code> has no <code class="inline-code">chapter</code>-s then
-          <code class="inline-code">book.chapter</code> is an empty sequence, so
-          <code class="inline-code">doc.book.chapter??</code> will <em>not</em>
-          be <code class="inline-code">false</code>, it will be always
-          <code class="inline-code">true</code>! Similarly,
-          <code class="inline-code">doc.book.somethingTotallyNonsense??</code> will not be
-          <code class="inline-code">false</code> either. To check if there was no children
-          found, use <code class="inline-code">doc.book.chapter[0]??</code> (or
-          <code class="inline-code">doc.book.chapter?size == 0</code>). Of course you can
-          use similarly all the <a href="dgui_template_exp.html#dgui_template_exp_missing">missing value handler
-          operators</a> (e.g.
-          <code class="inline-code">doc.book.author[0]!&quot;Anonymous&quot;</code>), just don&#39;t
-          forget that <code class="inline-code">[0]</code>.</p>
-
-            <div class="callout note">
-    <strong class="callout-label">Note:</strong>
-
-            <p>The rule with sequences of size 1 is a convenience feature
-            of the XML wrapper (implemented via multi-type FTL variables). It
-            will not work with other sequences in general.</p>
-            </div>
-
-
-          <p>Now we finish the example by printing all the
-          <code class="inline-code">para</code>-s of each chapter:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;h1&gt;${doc.book.title}&lt;/h1&gt;
-&lt;#list doc.book.chapter as ch&gt;
-  &lt;h2&gt;${ch.title}&lt;/h2&gt;
-  &lt;#list ch.para as p&gt;
-    &lt;p&gt;${p}
-  &lt;/#list&gt;
-&lt;/#list&gt;</pre></div>
-
-          <p>this will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">&lt;h1&gt;Test&lt;/h1&gt;
-  &lt;h2&gt;Ch1&lt;/h2&gt;
-    &lt;p&gt;p1.1
-    &lt;p&gt;p1.2
-    &lt;p&gt;p1.3
-  &lt;h2&gt;Ch2&lt;/h2&gt;
-    &lt;p&gt;p2.1
-    &lt;p&gt;p2.2</pre></div>
-
-          <p>The above FTL could be written more nicely as:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#assign book = doc.book&gt;
-&lt;h1&gt;${book.title}&lt;/h1&gt;
-&lt;#list book.chapter as ch&gt;
-  &lt;h2&gt;${ch.title}&lt;/h2&gt;
-  &lt;#list ch.para as p&gt;
-    &lt;p&gt;${p}
-  &lt;/#list&gt;
-&lt;/#list&gt;</pre></div>
-
-          <p>Finally, a generalized usage of the child selector mechanism:
-          this template lists all <code class="inline-code">para</code>-s of the example XML
-          document:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book.chapter.para as p&gt;
-  &lt;p&gt;${p}
-&lt;/#list&gt;</pre></div>
-
-          <p>The output will be:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">  &lt;p&gt;p1.1
-  &lt;p&gt;p1.2
-  &lt;p&gt;p1.3
-  &lt;p&gt;p2.1
-  &lt;p&gt;p2.2
-  </pre></div>
-
-          <p>This example shows that hash sub variables select the children
-          of a sequence of notes (just in the earlier examples that sequence
-          happened to be of size 1). In this concrete case, subvariable
-          <code class="inline-code">chapter</code> returns a sequence of size 2 (since there
-          are two <code class="inline-code">chapter</code>-s), and then subvariable
-          <code class="inline-code">para</code> selects the <code class="inline-code">para</code> child
-          nodes of all nodes in that sequence.</p>
-
-          <p>A negative consequence of this mechanism is that things like
-          <code class="inline-code">doc.somethingNonsense.otherNonsesne.totalNonsense</code>
-          will just evaluate to an empty sequence, and you don&#39;t get any error
-          messages.</p>
-        
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_146">Accessing attributes</h2>
-
-
-          <p>This XML is the same as the original, except that it uses
-          attributes for the titles, instead of elements:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-unspecified">&lt;!-- THIS XML IS USED FOR THE &quot;Accessing attributes&quot; CHAPTER ONLY! --&gt;
-&lt;!-- Outside this chapter examples use the XML from earlier.       --&gt;
-
-&lt;book title=&quot;Test&quot;&gt;
-  &lt;chapter title=&quot;Ch1&quot;&gt;
-    &lt;para&gt;p1.1&lt;/para&gt;
-    &lt;para&gt;p1.2&lt;/para&gt;
-    &lt;para&gt;p1.3&lt;/para&gt;
-  &lt;/chapter&gt;
-  &lt;chapter title=&quot;Ch2&quot;&gt;
-    &lt;para&gt;p2.1&lt;/para&gt;
-    &lt;para&gt;p2.2&lt;/para&gt;
-  &lt;/chapter&gt;
-&lt;/book&gt;</pre></div>
-
-          <p>The attributes of an element can be accessed in the same way
-          as the child elements of the element, except that you put an at-sign
-          (@) before the name of the attribute:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#assign book = doc.book&gt;
-&lt;h1&gt;${book.@title}&lt;/h1&gt;
-&lt;#list book.chapter as ch&gt;
-  &lt;h2&gt;${ch.@title}&lt;/h2&gt;
-  &lt;#list ch.para as p&gt;
-    &lt;p&gt;${p}
-  &lt;/#list&gt;
-&lt;/#list&gt;</pre></div>
-
-          <p>This will print exactly the same as the previous
-          example.</p>
-
-          <p>Getting attributes follows the same logic as getting child
-          elements, so the result of <code class="inline-code">ch.@title</code> above is a
-          sequence of size 1. If there were no <code class="inline-code">title</code>
-          attribute, then the result would be a sequence of size 0. So be
-          ware, using existence built-ins is tricky here too: if you are
-          curious if <code class="inline-code">foo</code> has attribute
-          <code class="inline-code">bar</code> then you have to write
-          <code class="inline-code">foo.@bar[0]??</code>. (<code class="inline-code">foo.@bar??</code> is
-          wrong, because it always returns <code class="inline-code">true</code>.)
-          Similarly, if you want a default value for the
-          <code class="inline-code">bar</code> attribute, then you have to write
-          <code class="inline-code">foo.@bar[0]!&quot;theDefaultValue&quot;</code>.</p>
-
-          <p>As with child elements, you can select the attributes of
-          multiple nodes. For example, this template prints the titles of all
-          chapters:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book.chapter.@title as t&gt;
-  ${t}
-&lt;/#list&gt;</pre></div>
-        
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_147">Exploring the tree</h2>
-
-
-          <p>This FTL will enumerate all child nodes of the book
-          element:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book?children as c&gt;
-- ${c?node_type} &lt;#if c?node_type == &#39;element&#39;&gt;${c?node_name}&lt;/#if&gt;
-&lt;/#list&gt;</pre></div>
-
-          <p>this will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">- text
-- element title
-- text
-- element chapter
-- text
-- element chapter
-- text</pre></div>
-
-          <p>The meaning of <code class="inline-code">?node_type</code> is probably clear
-          without explanation. There are several node types that can occur in
-          a DOM tree, such as <code class="inline-code">&quot;element&quot;</code>,
-          <code class="inline-code">&quot;text&quot;</code>, <code class="inline-code">&quot;comment&quot;</code>,
-          <code class="inline-code">&quot;pi&quot;</code>, ...etc.</p>
-
-          <p>The <code class="inline-code">?node_name</code> returns the name of element
-          for element nodes. For other node types, it also returns something,
-          but that&#39;s mainly useful for declarative XML processing, which will
-          be discussed in a <a href="xgui_declarative.html">later
-          chapter</a>.</p>
-
-          <p>If the book element had attributes, they would
-          <em>not</em> appear in the above list, for practical
-          reasons. But you can get a list that contains all attributes of the
-          element, with subvariable <code class="inline-code">@@</code> of the element
-          variable. If you modify the first line of the XML to this:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-unspecified">&lt;book foo=&quot;Foo&quot; bar=&quot;Bar&quot; baaz=&quot;Baaz&quot;&gt;</pre></div>
-
-          <p>and run this FTL:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book.@@ as attr&gt;
-- ${attr?node_name} = ${attr}
-&lt;/#list&gt;</pre></div>
-
-          <p>then you get this output (or something similar):</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">- baaz = Baaz
-- bar = Bar
-- foo = Foo</pre></div>
-
-          <p>Returning to the listing of children, there is a convenience
-          subvariable to list only the element children of an element:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc.book.* as c&gt;
-- ${c?node_name}
-&lt;/#list&gt;</pre></div>
-
-          <p>This will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">- title
-- chapter
-- chapter</pre></div>
-
-          <p>You get the parent of an element with the
-          <code class="inline-code">parent</code> built-in:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#assign e = doc.book.chapter[0].para[0]&gt;
-&lt;#-- Now e is the first para of the first chapter --&gt;
-${e?node_name}
-${e?parent?node_name}
-${e?parent?parent?node_name}
-${e?parent?parent?parent?node_name}</pre></div>
-
-          <p>This will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">para
-chapter
-book
-@document</pre></div>
-
-          <p>In the last line you have reached the root of the DOM tree,
-          the document node. It&#39;s not an element, and this is why it has that
-          strange name; don&#39;t deal with it now. Obviously, the document node
-          has no parent.</p>
-
-          <p>You can quickly go back to the document node using the
-          <code class="inline-code">root</code> built-in:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#assign e = doc.book.chapter[0].para[0]&gt;
-${e?root?node_name}
-${e?root.book.title}</pre></div>
-
-          <p>This will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">@document
-Test Book</pre></div>
-
-          <p>For the complete list of built-ins you can use to navigate in
-          the DOM tree, read the <a href="ref_builtins_node.html">reference
-          of node built-ins</a>.</p>
-        
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_148">Using XPath expressions</h2>
-
-
-            <div class="callout note">
-    <strong class="callout-label">Note:</strong>
-
-            <p>XPath expressions work only if <a href="http://jaxen.org/">Jaxen</a> (recommended, but use
-            at least Jaxen 1.1-beta-8, not older) or <a href="http://xml.apache.org/xalan/">Apache Xalan</a>
-            classes are available. (Apache Xalan classes are included in Sun
-            J2SE 1.4, 1.5 and 1.6 (and maybe later too); no separate Xalan jar
-            is needed.)</p>
-            </div>
-
-
-            <div class="callout note">
-    <strong class="callout-label">Note:</strong>
-
-            <p>Don&#39;t use the sample XML from the previous section, where
-            <code class="inline-code">title</code> is an attribute; that applies only to
-            that section.</p>
-            </div>
-
-
-          <p>If a hash key used with a node variable can&#39;t be interpreted
-          otherwise (see the <a href="xgui_imperative_formal.html">next
-          section</a> for the precise definition), then it will by
-          interpreted as an XPath expression. For more information on XPath,
-          please visit <a href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a>.</p>
-
-          <p>For example, here we list the <code class="inline-code">para</code> elements
-          of the chapter with <code class="inline-code">title</code> element (not
-          attribute!) content &quot;Ch1&#39;&#39;:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#list doc[&quot;book/chapter[title=&#39;Ch1&#39;]/para&quot;] as p&gt;
-  &lt;p&gt;${p}
-&lt;/#list&gt;</pre></div>
-
-          <p>It will print:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">  &lt;p&gt;p1.1
-  &lt;p&gt;p1.2
-  &lt;p&gt;p1.3</pre></div>
-
-          <p>The rule with sequences of length 1 (explained in earlier
-          sections) stands for XPath results as well. That is, if the
-          resulting sequence contains exactly 1 node, it also acts as the node
-          itself. For example, print the first paragraph of chapter
-          "Ch1":</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">${doc[&quot;book/chapter[title=&#39;Ch1&#39;]/para[1]&quot;]}</pre></div>
-
-          <p>which prints the same as:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">${doc[&quot;book/chapter[title=&#39;Ch1&#39;]/para[1]&quot;][0]}</pre></div>
-
-          <p>The context node of the XPath expression is the node (or
-          sequence of nodes) whose hash subvariable is used to issue the XPath
-          expression. Thus, this prints the same as the previous
-          example:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">${doc.book[&quot;chapter[title=&#39;Ch1&#39;]/para[1]&quot;]}</pre></div>
-
-          <p>Note that currently you can use a sequence of 0 or multiple
-          (more than 1) nodes as context only if the programmer has set up
-          FreeMarker to use Jaxen instead of Xalan.</p>
-
-          <p>Also note that XPath indexes sequence items from 1, while FTL
-          indexes sequence items from 0. Thus, to select the first chapter,
-          the XPath expression is <code class="inline-code">&quot;/book/chapter[1]&quot;</code>, while
-          the FTL expression is <code class="inline-code">book.chapter[0]</code>.</p>
-
-          <p>If the programmer has set up FreeMarker to use Jaxen instead
-          of Xalan, then FreeMarker variables are visible with XPath variable
-          references:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#assign <strong>currentTitle</strong> = &quot;Ch1&quot;&gt;
-&lt;#list doc[&quot;book/chapter[title=<strong>$currentTitle</strong>]/para&quot;] as p&gt;
-<em>...</em></pre></div>
-
-          <p>Note that <code class="inline-code">$currentTitle</code> is not a FreeMarker
-          interpolation, as there are no <code class="inline-code">{</code> and
-          <code class="inline-code">}</code> there. That&#39;s an XPath expression.</p>
-
-          <p>The result of some XPath expressions is not a node-set, but a
-          string, a number, or a boolean. For those XPath expressions, the
-          result is an FTL string, number, or boolean variable respectively.
-          For example, the following will count the total number of
-          <code class="inline-code">para</code> elements in the XML document, so the result
-          is a number:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">${x[&quot;count(//para)&quot;]}</pre></div>
-
-          <p>The output will be:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output">5</pre></div>
-        
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_149">XML namespaces</h2>
-
-
-          
-
-          <p>Be default, when you write something like
-          <code class="inline-code">doc.book</code>, then it will select the element with
-          name <code class="inline-code">book</code> that does not belongs to any XML
-          namespace (similarly to XPath). If you want to select an element
-          that is inside an XML namespace, you must register a prefix and use
-          that. For example, if element <code class="inline-code">book</code> is in XML
-          namespace <code class="inline-code">http://example.com/ebook</code>, then you have
-          to associate a prefix with it at the top of the template with the
-          <code class="inline-code">ns_prefixes</code> parameter of the <a href="ref_directive_ftl.html#ref.directive.ftl"><code>ftl</code>
-          directive</a>:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#ftl ns_prefixes={&quot;e&quot;:&quot;http://example.com/ebook&quot;}&gt;</pre></div>
-
-          <p>And now you can write expressions as
-          <code class="inline-code">doc[&quot;e:book&quot;]</code>. (The usage of square bracket
-          syntax was required because the colon would confuse FreeMarker
-          otherwise.)</p>
-
-          <p>As the value of <code class="inline-code">ns_prefixes</code> is a hash, you
-          can register multiple prefixes:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#ftl ns_prefixes={
-    &quot;e&quot;:&quot;http://example.com/ebook&quot;,
-    &quot;f&quot;:&quot;http://example.com/form&quot;,
-    &quot;vg&quot;:&quot;http://example.com/vectorGraphics&quot;}
-&gt;</pre></div>
-
-          <p>The <code class="inline-code">ns_prefixes</code> parameter affects the whole
-          <a href="dgui_misc_namespace.html">FTL namespace</a>. This means
-          in practice that the prefixes you have registered in the main page
-          template will be visible in all <code class="inline-code">&lt;#include
-          ...&gt;</code>-d templates, but not in <code class="inline-code">&lt;#imported
-          ...&gt;</code>-d templates (often referred as FTL libraries). Or
-          from another point of view, an FTL library can register XML
-          namespace prefixes for it&#39;s own use, without interfering with the
-          prefix registrations of the main template and other
-          libraries.</p>
-
-          <p>Note that, if an input document is dominated by a given XML
-          namespace, you can set that as the default namespace for
-          convenience. This means that if you don&#39;t use prefix, as in
-          <code class="inline-code">doc.book</code>, then it selects element that belongs to
-          the default namespace. The setting of the default namespace happens
-          with reserved prefix <code class="inline-code">D</code>, for example:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-template">&lt;#ftl ns_prefixes={&quot;D&quot;:&quot;http://example.com/ebook&quot;}&gt;</pre></div>
-
-          <p>Now expression <code class="inline-code">doc.book</code> select the
-          <code class="inline-code">book</code> element that belongs to XML namespace
-          <code class="inline-code">http://example.com/ebook</code>. Unfortunately, XPath
-          does not support this idea of a default namespace. Thus, in XPath
-          expressions, element names without prefixes always select the
-          elements that does not belong to any XML namespace. However, to
-          access elements in the default namespace you can directly use prefix
-          <code class="inline-code">D</code>, for example:
-          <code class="inline-code">doc[&quot;D:book/D:chapter[title=&#39;Ch1&#39;]&quot;]</code>.</p>
-
-          <p>Note that when you use a default namespace, then you can
-          select elements that does not belong to any node namespace with
-          reserved prefix <code class="inline-code">N</code>, for example
-          <code class="inline-code">doc.book[&quot;N:foo&quot;]</code>. It doesn&#39;t go for XPath
-          expressions, where the above can be witten as
-          <code class="inline-code">doc[&quot;D:book/foo&quot;]</code>.</p>
-        
-          
-
-
-
-<h2 class="content-header header-section2" id="autoid_150">Don&#39;t forget escaping!</h2>
-
-
-          <p>As we generate output of HTML format in these examples, and
-          HTML format reserves characters as <code class="inline-code">&lt;</code>,
-          <code class="inline-code">&amp;</code>, etc., we have to ensure that those will be
-          escaped. For that, either FreeMarker has to be <a href="pgui_config_outputformatsautoesc.html">properly
-          configured</a>, or add <code class="inline-code">output_format=&quot;HTML&quot;</code> in
-          the template to the <code class="inline-code">ftl</code> directive calls.</p>
-
-          <p>So if the book title is &quot;Romeo &amp; Juliet&quot;, the resulting
-          HTML output will be correctly:</p>
-
-          
-
-<div class="code-wrapper"><pre class="code-block code-output"><em>...</em>
-&lt;h1&gt;Romeo &amp;amp; Juliet&lt;/h1&gt;
-<em>...</em></pre></div>
-        <div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="xgui_imperative.html"><span>Previous</span></a><a class="paging-arrow next" href="xgui_imperative_formal.html"><span>Next</span></a></div></div></div></div>      </div>
-    </div>
-<div class="site-footer"><div class="site-width"><div class="footer-top"><div class="col-left sitemap"><div class="column"><h3 class="column-header">Overview</h3><ul><li><a href="http://freemarker.org/">What is FreeMarker?</a></li><li><a href="http://freemarker.org/freemarkerdownload.html">Download</a></li><li><a href="app_versions.html">Version history</a></li><li><a href="http://freemarker.org/history.html">About us</a></li><li><a itemprop="license" href="app_license.html">License</a></li></ul></div><div class="column"><h3 class="column-header">Handy stuff</h3><ul><li><a href="http://freemarker-online.kenshoo.com/">Try template online</a></li><li><a href="dgui_template_exp.html#exp_cheatsheet">Expressions cheatsheet</a></li><li><a href="ref_directive_alphaidx.html">#directives</a></li><li><a href="ref_builtins_alphaidx.html">?built_ins</a></li><li><a href="ref_specvar.html">.special_vars</a></li></ul></div><div class="column"><h3 class="column-header">Community</h3><ul><li><a href
 ="https://github.com/freemarker/freemarker">FreeMarker on Github</a></li><li><a href="https://twitter.com/freemarker">Follow us on Twitter</a></li><li><a href="https://issues.apache.org/jira/browse/FREEMARKER/">Report a bug</a></li><li><a href="http://stackoverflow.com/questions/ask?tags=freemarker">Ask a question</a></li><li><a href="http://freemarker.org/mailing-lists.html">Mailing lists</a></li></ul></div></div><div class="col-right"><ul class="social-icons"><li><a class="github" href="https://github.com/freemarker/freemarker">Github</a></li><li><a class="twitter" href="https://twitter.com/freemarker">Twitter</a></li><li><a class="stack-overflow" href="http://stackoverflow.com/questions/ask?tags=freemarker">Stack Overflow</a></li></ul><a class="xxe" href="http://www.xmlmind.com/xmleditor/" rel="nofollow" title="Edited with XMLMind XML Editor"><span>Edited with XMLMind XML Editor</span></a></div></div><div class="footer-bottom"> <p class="last-generated">
-Last generated:
-<time itemprop="dateModified" datetime="2017-03-13T10:55:28Z" title="Monday, March 13, 2017 10:55:28 AM GMT">2017-03-13 10:55:28 GMT</time>, for Freemarker 2.3.26 </p>
-<p class="copyright">
-© <span itemprop="copyrightYear">1999</span>–2017
-<a itemtype="http://schema.org/Organization" itemprop="copyrightHolder" href="http://apache.org/">The Apache Software Foundation</a>. Apache FreeMarker, FreeMarker, Apache Incubator, Apache, the Apache FreeMarker logo are trademarks of The Apache Software Foundation. </p>
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http://git-wip-us.apache.org/repos/asf/incubator-freemarker-site/blob/a4004324/builds/2.3.26-nightly/xgui_preface.html
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diff --git a/builds/2.3.26-nightly/xgui_preface.html b/builds/2.3.26-nightly/xgui_preface.html
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--- a/builds/2.3.26-nightly/xgui_preface.html
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-<h1 class="content-header header-chapter" id="xgui_preface" itemprop="headline">Preface</h1>
-</div></div><p>Although FreeMarker was originally designed as a web page template
-      engine, as of version 2.3 it also targets another application domain:
-      transforming XML into arbitrary textual output (e.g. HTML files). Thus,
-      in many cases, FreeMarker is an XSLT alternative.</p><p>Technically, there is nothing special in transforming XML
-      documents. It&#39;s just like when you do anything else with FreeMarker: you
-      drop the XML document into the data-model (and possibly other
-      variables), and then you merge the data-model with the FTL template(s)
-      that generate the output text. The extra features introduced for better
-      XML processing are the node FTL variable type (symbolizes a node in
-      generic tree structures, usable not only for XML) and the built-ins and
-      directives dealing with them, and the XML wrapper you get out-of-the-box
-      that exposes XML documents as FTL variables for the templates.</p><p>What&#39;s the difference between using FreeMarker or XSLT? The FTL
-      language has the usual imperative/procedural logic. On the other hand,
-      XSLT is a language with declarative style, designed by &quot;too clever&quot;
-      people, so it&#39;s not easy to adopt its logic, nor to use it in many
-      cases. Also its syntax is terribly verbose. However, XSLT&#39;s
-      &quot;apply-templates&quot; method can be very handy when you process XML
-      documents, thus FreeMarker supports something similar called the
-      "visitor pattern". So in many applications, it is much
-      easier to write FTL stylesheets than XSLT style-sheets. Another
-      fundamental difference is that FTL &quot;transforms&quot; the node tree to text,
-      while XSLT transforms the tree to another tree. So you cannot always use
-      FreeMarker where you can use XSLT.</p><div class="bottom-pagers-wrapper"><div class="pagers bottom"><a class="paging-arrow previous" href="xgui.html"><span>Previous</span></a><a class="paging-arrow next" href="xgui_expose.html"><span>Next</span></a></div></div></div></div>      </div>
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 ="https://github.com/freemarker/freemarker">FreeMarker on Github</a></li><li><a href="https://twitter.com/freemarker">Follow us on Twitter</a></li><li><a href="https://issues.apache.org/jira/browse/FREEMARKER/">Report a bug</a></li><li><a href="http://stackoverflow.com/questions/ask?tags=freemarker">Ask a question</a></li><li><a href="http://freemarker.org/mailing-lists.html">Mailing lists</a></li></ul></div></div><div class="col-right"><ul class="social-icons"><li><a class="github" href="https://github.com/freemarker/freemarker">Github</a></li><li><a class="twitter" href="https://twitter.com/freemarker">Twitter</a></li><li><a class="stack-overflow" href="http://stackoverflow.com/questions/ask?tags=freemarker">Stack Overflow</a></li></ul><a class="xxe" href="http://www.xmlmind.com/xmleditor/" rel="nofollow" title="Edited with XMLMind XML Editor"><span>Edited with XMLMind XML Editor</span></a></div></div><div class="footer-bottom"> <p class="last-generated">
-Last generated:
-<time itemprop="dateModified" datetime="2017-03-13T10:55:28Z" title="Monday, March 13, 2017 10:55:28 AM GMT">2017-03-13 10:55:28 GMT</time>, for Freemarker 2.3.26 </p>
-<p class="copyright">
-© <span itemprop="copyrightYear">1999</span>–2017
-<a itemtype="http://schema.org/Organization" itemprop="copyrightHolder" href="http://apache.org/">The Apache Software Foundation</a>. Apache FreeMarker, FreeMarker, Apache Incubator, Apache, the Apache FreeMarker logo are trademarks of The Apache Software Foundation. </p>
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